Convertible footwear



FIG. 1 is a perspective view of convertible footwear, showing my new design;

FIG. 2 is a further perspective view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front view thereof.

The broken lines illustrate environmental structure and form no part of the claimed design. 

I claim the ornamental design for convertible footwear, as shown and described. 